This is as close to SSCCE as I can get: four files, the main is in DisplayA3D. You only need Jogamp Ardor3D. These can also demonstrate that independent textures don't want to work across multiple JFrames. Maybe something will jump out at you and you can guide me how to implement fixes. I'm able to duplicate the problems with this code.
DisplayA3D.javaManagerA3D.javaDefaultSceneA3D.javaSceneA3D.java